378969840 has 200 divisors, whose sum is σ = 1327133808. Its totient is φ = 100224000.

The previous prime is 378969779. The next prime is 378969853. The reversal of 378969840 is 48969873.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1509715 + ... + 1509965.

Almost surely, 2^378969840 is an apocalyptic number.

378969840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378969840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663566904).

378969840 is an abundant number, since it is smaller than the sum of its proper divisors (948163968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378969840 is a wasteful number, since it uses less digits than its factorization.

378969840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 378969840 is about 19467.1477109514. The cubic root of 378969840 is about 723.6605247922.

The spelling of 378969840 in words is "three hundred seventy-eight million, nine hundred sixty-nine thousand, eight hundred forty".